//定义变量
@mysize: 16px;
body,p,h1,h2, h3, h4, h5,h6, ul, ol, dl, dt, dd {
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: @mysize;
    font-family: '微软雅黑';
}
a {
    text-decoration: none;
    color: #999;
}
input, img {
    vertical-align: middle;
    padding: 0;
    border: 0;
    outline: none;
}
//PC端 版心设置
.w {
    width: 980px;
    margin: 0 auto;
}
.clearfix::after {
    content: '';
    display: block;
    clear: both;
    // 如下代码可以省略
    height: 0;
    line-height: 0;
    // 隐藏元素
    visibility: hidden;
}
.clearfix {
    *zoom: 1;
}